Malicious PDF — malware analysis report

Static analysis result for SHA-256 7b769d85bd985abb…

MALICIOUS

PDF

33.4 KB Created: 2021-06-18 01:27:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 2706991f4053989b2515927efa0a8124 SHA-1: e2bd0781d634ce143a46fe83f32ef9ea95dcb2c7 SHA-256: 7b769d85bd985abbcbbe147cf39f292d643c9cce2f12d8b26437ec24a45a5ea4
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a primary external URL, all related to game cheats and currency. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' suggests the document may be part of a multi-stage attack, potentially leading to a password-protected payload. The ML classifier strongly indicates maliciousness, and the overall pattern points to a phishing lure for malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/cheat-booga-booga-roblox-game-hack PDF link annotation
    • https://library.itn.ac.id/perpusitn/repository/free-robux-in-game-type-your-password_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/i-need-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-coin-master-spins-blogger_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/black-offwhite-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/redeem-roblox-gift-card-free_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-game_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/hack-roblox-money-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-faces-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-robux-quiz_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/more-robux_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/free-roblox-characters_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/ok-google-free-roblox-games_GM431946152.pdfIn PDF document text
    • https://library.itn.ac.id/perpusitn/repository/online-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002d0f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D0F 22128 bytes
SHA-256: 04e4cc485ea90331c4f7cdb264cc39379eb37ef1b606193ffe037592805dd5b7
font_01_sfnt_off00005e52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E52 18756 bytes
SHA-256: 93c915e94091d3b8792552d91235abbe36fb7d6c6abec060e2a787af098add6a

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